Roadmap
Elmar.tax is actively developed. Here's what's available today and what's coming next.
Available now
- Tax forms: UStVA (2025, 2026), USt (2025), GewSt (2024), KSt (2024), FSE KapG (2023)
- Input formats: JSON and XML payloads
- Deployment: Docker container with pre-bundled ERiC native libraries
- API documentation: Built-in OpenAPI 3.1 with Swagger UI
- PDF handling: Automatic upload of ERiC-generated PDFs to your storage
- Tax office lookup: State, office, and unified tax number endpoints
- Dry run mode: Validate without submitting via
?dryRun=true - Cross-platform: Linux (x64) and macOS (universal)
Coming next
- ESt — Einkommensteuer (personal income tax)
- Async processing — built-in work queue for high-throughput scenarios
- Authentication — optional API key / token auth for the REST layer
- New tax years — 2025/2026 editions for GewSt, KSt, and FSE
Longer term
- Balance sheet forms — E-Bilanz and related submissions
- Additional tax forms — based on demand and regulatory changes
- Observability — structured logging, metrics, and tracing support
- Improved error reporting — structured error codes with field-level detail
- Webhook notifications — callback on submission completion
Last updated: March 2026
Have a feature request? Get in touch.